测量了 0 8at. %Nd3 + ∶Y0 .5Gd0 .5VO4的吸收光谱和荧光发射谱 ,光谱显示该晶体在 80 8 5nm有很强的偏振光吸收峰 ,且π偏振光 (E∥C)吸收远强于σ偏振光 (E ⊥C) 吸收 ,半高宽度分别为 4 5nm和 12nm ,吸收截面分别为 19 6 9× 10 -2 0 cm2 和 6 4 1× 10 -2 0 cm2 ;其荧光发射 (4F3 /2 → 4I11/2 跃迁 )峰值波长在 10 6 4nm ,半高宽度为 3 7nm ;4F3 /2 → 4I11/2 跃迁的荧光寿命为 110 μs;光谱特性表明Nd3 + ∶Y0 .5Gd0 .5VO4晶体是潜在的高效率激光晶体材料 The absorption and emission spectra of 0 8 at.% Nd3 +: Y0 .5Gd0 .5VO4 were measured. The spectra showed that the crystal had a strong polarized absorption peak at 80 8 5 nm and the π-polarized (E∥C) absorption was far Which is stronger than the absorption of σ polarized light (E ⊥ C), the half widths are 45 nm and 12 nm respectively, and the absorption cross sections are 19 6 9 × 10 -2 0 cm 2 and 6 4 1 × 10 -2 0 cm 2 respectively. 4F3 / 2 → 4I11 / 2 transition) has a peak wavelength of 10 6 4nm and a half-height width of 37 nm. The fluorescence lifetime of the 4F3 / 2 → 4I11 / 2 transition is 110 μs. The spectral characteristics of the Nd3 +: Y0 .5Gd0.5VO4 crystal Is potentially a highly efficient laser crystal material